ORCA has been achieved in hot atomic vapours demonstrating low-noise operation over GHz bandwidth allowing for high SNR for single-photon-level inputs [1]}, recall of heralded single photons [2]}, and can be used as a time-nonstationary coherent spectral-temporal filter to improve indistinguishably of single photon sources [3]}. Here we extend the ORCA protocol to store light in the telecom C-band for the first time.
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